Die for making seamless tubes



` ll Lszgzss W. NATHANSON ET AL nu: von MAKING sEAMLEss Tuzs Filed April7,' 1924 s sheets-sheet 1 W. NATHANSON ET AL l Feb. 24, 1925,

DIE FOR MAKING SEAMLESS TUBES Filed April 7 1924 8 Sheets-Sheet 2 wmwFeb. 24. 1925.

, 1,527,266 w. NATHANSON ET AL. l

um Fon MAKING sEAMLEss TUEs Filed Aprl 7, 1924 a sheets-sheet s' W.NATHANSON ET AL DIE FOR MAKING SEAMLESS TUBES Filed Apil L 1924 8Sheets-Sheet 1 W. NATHANSON'ET AL DIE FOR MAKING SEAMLESS TUBES asheets-shea Filed April 7, 1924 Feb. 24. 192,5- 1,527,266

, w. NATHANSON ET AL.

DIE FOR MAKING SEAMLESS TUBES Filed April 7, 1924 8 Sheets-Sheet 6 Feb,24. 1925. 1,527,266 w. NATHANSON E1' AL um Fox MAKING sEAMLEss TUBESFiled April 7,`1a24 s sheets-Sheet v W. NATHANSCN ET AL DIE FOR MAKINGEEAMLESS TUBES Filed April 7, 1924 8 Sheets-Sheet 3 Patented Feb. 4-,1F25.

Utili WLLIAIJI NATHANSON AND JACK BEI-IM, OF CHICAGO, LLINOIS, ASSIGNORSOF ONE- THIRD TO OTTO A. ZINKE, OF CHICAGO, LLNOS.

DIE FOR MAKING SEAMLESS TUBES.

Application led April '7,

To all @07mm t may concern.'

Be it known that we, WILLIAM NATHAN- sor.' and Jaen BEHM, citizens otthe United States, and residents ci the city of Chicago, county ot Cook,and State or Illinc's, respectively, have invented certain new anduseiiul improvements in Dies tor Making Seamless Tubes, oit which thefollowing is a speciiication.

Our invention pertains to dies for making seamless tubes; and theinvention has for its principal object the provismn o't' a set et diesfor forming a seamless connector tube from a blank oiE sheet metal. andmore particularly `tor drawing and forming from such blank a tubeprovided with 'flanges arranged to secure said tube to the lower corneroi an automobile radiator.

Other objects will appear hereinafter.

rThe invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part ci" this speciiication, and in which,-

Fig. 1 shows a vertical sectional view of the die, including the uppermovable member and the lower stationary member, used in cutting a blankot suitable shape from a strip et sheet metal;

Fig. 2 is a horizontal cross section ot said die taken on line 2 2 otFig. 1;

Fig. 3 is a view of the blank cut with the die shown in Fig. 1;

Fig. 4 shows a vertical sectional view of the die, including the uppermovable and the lower stationar)T members, used in the next ope ationfor forming the shell or cap shown between said members, from 'the blankshown in Fig. 3:

Fig. 5 is an inverted cross sectional view ot" the upper member taken online 5 5 of Fig. 4;

Fig. 6 is a plan view ot the lower member shown in Fig. 4;

Fig. 7 shows a vertical sectional view of the die used in thesucceeding` operation, including the upper and loweil members and theproduct termed 'from the cap shown in Fig. 4;

Fig. S is a horizontal sectional view of die taken on line 8 S of Fig.7;

J. il.e

Fig. 9 shows a vertical sectional view of i924. serial no. 704,710.

the die, including the upper and lower members, used in the succeedingstep for contracting and elongating the upper tubular portion of theproductshown in Fig. 7.

Fig. 10 is a horizontal sectional view taken on linel 10-10 ot' Fig. 9;

Fig. 11 shows a vertical sectional view of the die, including the upperand lower members, used in the following step for forming the productwith the oiiset fianges, as shown between said members, irom the productshown in Fig. 9;

Fig. 12 is a vertical sectional view taken ou line 1244.2 ot Fig. 11;

Fig. 13 is a horizontal sectional view ot the lower member of said dieshown in Figs. 11 and 12;

Fig. 14 is a vertical sectional view of the die used in the followingstep to cut an opening in the upper closed end of the tube, as indicatedby the product shown in said figure.

Fig. 15 is an enlarged plan view of the lower member of the die shown inFig. 14;

Fig. 16 is an inverted sectional view taken on line 16-16 of Fig. 14;

Fig. 17 shows a vertical sectional view ot the die used in thesucceeding operation for bending the tube, as shonn in said figure;

Fig. 18 is a plan view of the'lower meinber of the die shown in Fig. 17;

Fig. 19 is a. horizontal sectional view taken on line 19-19 ot Fig. 17;

Fig. 20 is a vertical sectional view ot the die used in tlxe succeedingstep for curving the flanged ends of the connector tube, as shown insaid ligure;

Fig. 21 is a plan view of the lower member of the die shown in Fig. 20;

Fig. 22 is horizontal sectional view taken on line 22-22 of Fig.`20;

Fig. 23 is a vertical sectional view of the die used in the succeedingstep for trimming the flanges of the connector tube;

Fig. 24 is an inverted sectional view taken on line 24 24 of Fig. 28;

Fig. 25 is a plan view of the lower member of the die shown in Fig. 23;

Fig. 26 is a view of the connector tube before trimming the flange;

Fig. 27 is a View of the connector tube after the flange has beentrimmed with the die shown in Fig. 23;

Fig. 28 shows a vertical sectional view of the die used in thesucceeding operation, including the lower stationary member and theupper movable member, for forming the flanged drain port on theconnector tube;

Fig. 29 is an inverted view of the upper member of the die shown in Fig.28;

Fig. 30 is a partial sectional View taken on line 30-30 of Fig. 28;

Fig. 31 is a view of the finished device produced by means of the abovedisclosed dies; and p Fig. 32 is a sectional view taken on line 32-32 ofFig. 31.

In carrying our invention into effect we provide a set or series of diesfor drawing a blank of sheet metal into shell shape and forming from theintermediate portion of the blank a closed tubular upper portion, andfrom the edge portion of the blank an extended lower portion, withoutcracking or wrinkling the metal of the blank; then forming flanges onthe nztencled lower portion; providing` an opfning in the closed upperend of the tubula r portion; and bending the flanged portion and flangesinto shape for ittaching the device to the water chamber of anautomobile radiator. 7e preferably also provide dies for trimming theflanges, to produce the product shown in Fig. 27, and for forming aflanged drain outlet on the tube, as shown in Figs. 31 and 32. Variousforms and numbers of dies may be used to produce the desired connectortube, but the preferred form includes the following dies used in thefollowing successive order.

Fig. 1 of the drawing shows the die comprising the lower `:fftationarymember including the supporting member 5, mountable on the stationaryjaw of a die pressed machine, and the die ring or cutting ring 6 securedto member 5 and provided with an opening 7 of the exact shape and sizeof the blank; and the upper or movable member including a stem 3,mountable on the movable jaw of the die press machine, and the die block9 secured to member 8 and exactly fitting the opening 7 for cutting theblank 10 from a strip of sheet metal (as indicated in Fig. 3) to exactshape and size.

In Fig. 4 is shown the die for performing the drawing operation andshaping the blank 10 into a shell or cap 11 having a bevelled edge, theend 10 of the blank 10 being drawn to form the lower extended end 11 ofsaid cap. This die comprises the lower stationary member including thebase member 12 provided with an annular flange 12, and a central post 13fastened to member 12 in any suitable manner; also a ring 14 which ismounted to move with pins 15 in the annular space provided between post13 and flange 12', said pins 15 being secured to a disc 16 for movingthe same longitudinally on a rod 17 threaded into the lower part ofmember 12. A disc 18 is mounted on the lower end of rod 17 by means of asuitable nut or the like, and a resilient post 19, of rubber or anysuitable yieldable material, is mounted on rod 17 between discs 15 and18. The upper movable member of this die includes a member 21 attachableto the movable jaw of the die press machine, and a cylindrical member 22secured to member 21 and provided with an opening 23 closely fittingover post 13 of the stationary die member.

In forming the cap 11 with the above die the blank 10 is placed inproper position on ring 14 and after the upper die member descends thecylinder engages the blank and gradually forces the outer ends thereofdownward with the ring 14, pins 15, disc 16 and compressing theresilient post 19, thereby gradually and evenly drawing and expandingthe outer or edge portion of blank 10 and forming the cap 11 as shown inFig. 4. A plunger 24 with a stem 24 is also provided for expelling thefinished cap 11 from the opening 23.

The die used for the succeeding step is shown in Fig. 7 and comprises alower stationary member including a base member 26 and a die block 27secured thereto and provided with an upper neck portion 27. The uppermember of this die includes a mounting member 28 with a cylindricalsleeve 29 secured thereto and having an opening with an enlarged portion30 and a contracted portion 30 to fit respectively over the portions 27and 27 of the stationary die and to form the extended .lower portion 25and the contracted upper tubular portion 25', as shown in said Fig'. 7,from cap 11 shown in Fig. 4. A plunger 31 is also provided witl' asuitable stem to expel the finished cap ci' shell from the movable uppermember.

The die for (he followingogiieraliou is shown in Fig. 9 and coml'iriscsa lower stationary member including a base member 33 with a die block 34secured thereto and having an upper contracted neck portion 34. Theupper movable member of the die includes a, member 35 attachable to themovable ]'aw of the die press machine and provided with a cylindricalmember 36 having a central opening with an enlarged portion 37 and acontracted portion 37 to form the expanded portion 32 and the contractedelongated portion 32. as shown in Five'. 9, a plunger 38 is alsoprovided in the movable member to expel the shell finished by thisoperation.

The die used in the succeeding operation further draws the extendedlower portion 32 of the shell shown in Fig. 9, forming ofli'- setflanges thereon, and comprises a lower stationary member including abase member 41 provided with an upstanding cylinil l) drical flange lland a cylindrical sleeve 42 secured to the base member within saidflange ll. Ain irregular die sleeve il is' mounted within sleeve 42 andis provided with an upper bevelled face on its u pper portion and a pairot downwardly slanting faces 43. il. stem dit is mounted within sleeveand is secured to the base member' Lll with a bolt or suitableliastening` means as shown. The upper .movable member ot the dieincludes a member d5 mountable on the movable iaw of the die pressmachine, and to which .is secured a sleeve t6 having' a berelled faceelfi and a pair of bevelled faces 4G extending' from tace 4G to thelower end of member lG, said faces 4 6 and d6 cooperating' with thefaces lf-3f and d3 on the die sleeve Llll, for forming the flanges li7and 47 on the shell 4U). Opposite bevelled shoulders #t8 are alsoprovideL on die sleeve 4G and corresnond with the bevelled shoulders dllon stem ll to form bevelled or gradually sloping' shoulders i9 on theshell. A plunger 5l) is slidably mounted in the central openii'ig'formed in die sleeve l5 for expelling the finished shell therefrom.

ln the succeeding' operation the die saown in Fig. i4 is used forcutting' an opening in the upper closed end of the tubular portion 40 ofshell. 40. rlhis die includes a lower base member 5l with a post 52secured thereto, said post being' provided with a stem 53 at its upperend having' a conical top and a circular cutting' edge 53', and anannular groove 5-l formed between said stem 5S and an outer annularflange he upper movable part of said die includes a member 56 having anannular cutting flange 57 and an opening` 57 formed therein, saidannular flange 57 engaging' in slot 54 and since the inner ede'e of seidflange dts closelyY over the cutting' edn'e 5S of stem 55, a disc is cutthercb)7 from the upper end of tubular portion lll leaving' a desiredopening' 59 in said tubular portion. and while said flange 57 descendsbeyond cutting; edge into the groove 54 it carries with it the upper rimof portion 40 bending' it downward over flange 55 and into groove 54.

rllhe die used for the following' operation includes a stationary7bas-ie member 6l provided with an upstandine; cylindrical fiange Gl inwhich mounted n sleeve 62. A semi-cylindrical die block is mountedwithin said sleeve and is provided with an upper slantino; face 63 and apair of slantine; faces GB ertendincf downwardly from face 68 l post 64is mounted on the inner side o't member 63 and is secured to thestationarw7 member 6l, a bevelled portion Sel being provided on theupper part of said post and shoulders 64 on the side of the post. rEhemovable die part includes an attaching member G5 lo which is secured anirregular sleeve member GG having; a currefl and slanting edge portion(35 on its lower inner end. plunger 67 and a die block (58 securedthereto are slidably mounted in the central. opening' of member Gti,bereled face (38 is'provided on the lower side of the die bloeit and anopening (if) is formed in said block for retaining' the tubular portion40 therein, as indicated in dotl ed lines in Fig'. 17. ils the diedescends with the shell the bevelled face 68 engages flange 47 and thecurved edge 66/ engages the lower or flanged part of the shell Ll() andgraduallybends it downward with the fl' i 7' until said flange engagesaga'nst slanting' face (33 on block G2, and the irl regular sleevemember 66 continues descend-- ine' in opening' 62 in sleeve (32, a'lterface GS and flange 47 have descended onto berelled face '33', thereb;7bending` downwardly the entire lower portion of shell llt).

In the next operation the die illustrated in Fig'. 2O is used forcurving` the flange portion and completing the flange. rf his dieincludes a base member 7l having slotted lateral fastening flanges 7l,and to said base member is secured a die block 72 provided wit-h acurved upstanding' lug 72 having a curved shoulder 72". A stem 73 isiounted to move in a chamber 7 3 formed in lug 72 and base member 7l,and pins 7d are extended from the lower end oft' `aid stem down to adisc 7 beneath base 7l. A rod 7G is threaded into base member 7l andcarries a disc 77 bv means of a suitable nut, and has a resilient post78, of rubber or the like. mounted between said discs 77 and 75. Theupper part of the die in chicles an attaching;` member 7 9 to which issecured a die block having downwardly extending; portions 8l and acircular opening; S2 formed therebetween and provided with a curvedinner portion S2. The connector tube is pressed on the lugo; 72. and

as the movable members 79 and 80 oit the die descend the edge 80 ofmember 8O engages the lower end oir shell el() and presses it upon thetop of stem 73, said stem .Leia-dually and vi-elding'lv descending withthe pins 74 and dise 75 thereby compressing resilient post 7S. rllhisgradual and violding movement downward of the outer end of the flangedportion 40 thus permits the gradual and leven extendingY of tue metal ofsaid portion el@ to curve it `srraduallv between the curved portion 72of lug 72 and the curved portion S2 of block 80, to 'term the curvedpart d0 on the connector tube; and during this operation the flangeportion 47 is also formed to complete the fiange l-7 which entendssubstantiallv longitudinally of the connector' tube, and these flangeportions are therebf,7 pressed substantially at right angles to theIflange portion Cil CLI

Gli

el?, in order to lit the corner of an automobile radiator. By thisoperation, due to the resilient movement of the stem T3 with the bloei;T8, the curved portion e and the flanges are completed and properly andsmoothly formed without wrinlling or cracking` the metal.

in addition to the dies so far described and used in the preceding'steps l'or producing the connector tube shown lin Fig. 20, we preferablyalso provide dies ior neatly trimming oli the edges olg the lianges, andlor providinga drain port in said tube. The die t'or trimming` theHang-es is illustrated in 23 and includes a base membei' Sil; to whichis securer a die block 85 provided with a curved lufr 85 and asemicircular ledge 85 extending,` horizontally from said lug. rlhe diealso includes a member 87 att-achable to the movable die-jaw and a block88 secured thereto and provided with a cutting edge S8 forming a curvedslot 89 closely littina around the edge ot block S to shear eti1 theouter or uneven portion 86 from the flanges 47 and 47, to provide theneatly linished product shown in Fig'. 2T. A guide member 90 ispreterably also secured to base member Se. to retain die block 88against block 85.

rlhe die provided for forming; the drain port in the tube is illustratedin Fig. 28, and comprises a base member 91 upon which is secured a post92 provided with an annular cuttingflange 92 within which is mounted apin 93 forming an annular Lgroove 92 between it and flange 92. inclu-desa member 94, attachable to the movable die-jaw, to which is secured adie block 95 provided with a stem 95 and an annular groove 95 around thesame, a central opening' 96 being; formed in said stem, and a plunger 97is provided with a linger 97 to move in opening 96. The connector 'tubeis placed in the 'position shown in dotted outline in Fig. 20, as theupper part ot the die descends the pin 93, entering in opening Q6,removes a small disc from the connector tube for an opening 9S, thebevelled cutting edge 95 cncing` the edges around said opening downwardinto annular slot 92 thus forming` the tlange 98 for the drain port onthe connector tube, and the annular flange. 92 on post 92 moves intoslot 92 and terms the annular ridge 98 around the drain port on theconnector tube, thus providing the product shown in Figs. 3l and Anysuitable die may also be provided for forming a bead or annular ridgearound the tubular portion adjacent its end, for securely attachingv ahose member thereon.

llt is apparent from the above disclosure that we have provided a set orseries of dies for drawing a blank of sheet metal into al neat andsmoothl7 finished connector tube which is entirely seamless and is freefrom rlhe die further cracks or wrinkles, and which is provided withflanges adapting the tube to be mounted on the water chamber ot anautomobile radiator; and it is also apparent that the dies ot ourinvention may be readily ein` ployed tor forming,` lvarious smoothseamless tubes ot a similar nature.

While we have illustrated and describe-d the preferred form oitconstruction 'for car- Frying` our invention into etliect, this iscapable et variation and modification without departing from the spiritol the invention. life, therefore, do not wish to be limited to theprecise details of construction set forth, but desire to avail ourselvesof such variations and modifications as come within the scope of theappended claims.

Having' described our invention, what we claim as new and desire tosecure by liet ters Patent is:

1. Mechanis n for iccaming;- flanges on a tubular member having' auextended lower portion, said mechanism including a shw tionary part withan irregular sleeve having;` an upper bevelled 'lace portion aud taceportions extending downwardly therefrom, also a post mounted on saidstationary part and extending' between and above said .tace portions,said mechanism further including a movable part having' an .irregularsleeve with slanting tace portions corresponding to the 'face portimison the lirst named sleeve, for lormingr outwardly ei:- tent ino) il: eson id lower portion.

2. llfechanism for curving a tube having liangjes at one end, saidmechanism ineluding a stationary part having a member with inclinedfaces to tit said flanges, also a post with a bevelled upper end mounteda ,.f'ainst said member, said mechanism further includingr a movablepart havingr an irregular sleeve and a plunger mounted in said sleeveand provided with a slautine' (mening,` therethrough and a bevelledlower tace portion, said opening' being; arranged to receive the tubularportion oi" the tube and said plunder and sleeve being' arranged todescend and bend the flanged portion ot said tube on said post.

3. ln mechanism for makina' a seamless connector tube, die means forshaping' liangres and for curving' the flanged portion of a shell, saidmeans inclndiuua stationary member with a die block and a. stem providedwith yieldable means for movably mounting' it :in said block and member,a curved lua' on said bloclrY slantiuo' downward towards said stem. saiddie means also including' a movable block havin;y a curved opening toiit said curved lun', and having' a portion to engage the end oi saidshell and press it upon said stem and therewith gradually downwardly tocomplete drawing the flanges and to curve the flanged end over said lug.

il. ln mechanism 'for making a seamless connector tube, die means forforming a llanged drain port in said tube, and including a stationarypost with an vannular' cutting flange and a pin mounted centrallytherein and extending to the top oi said cutting flange, said means alsoincluding a movable die block with a cutting stem having an openingtherein for receiving said pin and having a cutting edge surrouiulingsaid opening and being dome-shaped outwardly from said edge, and anannular groove formed around the dome-shaped portion to receive theannular cutting flange olf' said post, lor forming a tlanged drainopening.

5. Die means for making a seamless connector tube, said means comprisinga stationary member provided with an integral sleeve and a stem securedtherein, a ring closely .iitting around said stein, means including apliable post tor yieldably supporting said ring; and a movable memberincluding a cylindrical flange closely fitting around said stem andwithin said sleeve for engaging a blank or sheet metal placed on saidring to draw said blank downward over said stem into the form or a cap,said cylindrical flange being provided with a. plunger for expellingsaid tubular member.

6. lie means for making a seamless oonnector tube, comprising astationary member with an upstanding sleeve, an irregular sleeve with anupper and connected downwardly bevelled face portions mounted in thefirst sleeve, a. stem mounted in said irregular sleeve being providedwith shoulders' adjacent said face portions; and a movable membercarrying an irregular sleeve having bevelled liaces to co-operate withthe bevelled faces on the lirst said irregular sleeve and havingshoulders to co-operate with the shoulders on said stem, for formingflanges and bevelled shoulders on a connector tube.

7. Die means for making a seamless oonnector tube, comprising astationary member with an upstanding sleeve, an irregular sleeve mountedin the iirst sleeve and having a. bevelled upper face portion andslanting face portions descending therefrom, a stem mounted in saidirregular sleeve and being provided with shoulders at the junctions ofsaid face portions; a movable member carrye ing an irregular sleevehaving bevelled i'aces to co-operate with the bevelled laces on thefirst said irregular sleeve and having shoulders to co-operate with theshoulders on said stem, for forming end iianges and bevelled shoulderson a connector' tube; and a plunger mounted in the second irregularsleeve for expelling the connector tube.

S. Die means for making a seamless connector tube, said means comprisinga stationary member provided with a sleeve, a semicylindrical membermounted therein and having a slanting tace on its upper end and slantingedge faces extending oppositely downwardly therefrom, a stem mounted insaid semi-cylindrical member and provided with a bevelled upper 'ace;and a movable part including an irregular sleeve with a bevelled lowerportion, and a p1 in r with a die block slidably mounted in the sleeveand provided with a bevelled louer portion to rit the bevelled tacos onsaid cylindrical member and having a slanting opening for receiving aYflanged tube, said sleeve and block beingv arranged and their lowerportions bevelled to bend said tube and flanges on said stem andbevelled faces.

9. Uie means lior making aseamless cone nector tube, comprising astationary member provided with a die block and a curved lug mountedthereon, a stem movably mounted in said block and extending above thesame, pliable means lor yieldably support-ing said stem above saidblock; and movable die block provided with a curved portion and ahorizontal portion, said curved portion being arranged to (io-operatewith the curved lug and shape, a curved elbow on said tube, and saidhorizontal portion being adapted to gradually draw the end ol the curvedelbow downward between it and said stein and press the tip end onto thedie block to complete a flange on the end of said curved elbow duringthe curving of said tube.

ln testimonv whereof we have signed our names to this specification inthe presence or two subscribing witnesses.

VILLAM NATHANSON. JACK BEHM. llitnesses:

Fauna C. PrLnroN, MARGARET Auen,

